We decided to driveway camp last night. Long story short we forgot to crack windows/bathroom vent and woke up with lots of moisture on the windows. It rained some yesterday and this morning I noticed condensation in the skylight over the shower. I have never noticed this before today. I'm thinking it's either one of two things. Condensation due to not cracking windows or I've got myself a leak. I'm leaning towards the first option because it's not very much condensation. I'm thinking there would be more if it would have leaked.
Also I noticed from the inside that the corners are NOT insulated, which I'm going to fix whether I have a leak or not.